janusgraph-mgmt中的一些操作

关闭事务

mgmt = graph.openManagement();
ids = mgmt.getOpenInstances();
for(String id : ids){if(!id.contains("(")){mgmt.forceCloseInstance(id)}};
mgmt.commit();

查看事务

mgmt = graph.openManagement();
mgmt.getOpenInstances();
mgmt.commit();

查看所有索引

mgmt = graph.openManagement();
mgmt.getGraphIndexes(Vertex.class);
mgmt.commit();

查看索引状态

mgmt = graph.openManagement();
vlabel = mgmt.getPropertyKey('vlabel');
byvlabel=mgmt.getGraphIndex('byvlabel');
status=byvlabel.getIndexStatus(vlabel);

获取所有节点标签

mgmt = graph.openManagement();
mgmt.getVertexLabels()
mgmt.commit()

获取所有边的标签

mgmt = graph.openManagement();
mgmt.getRelationTypes(EdgeLabel.class)
mgmt.commit()